The B7177 semi truck oil filter blocks impurities that shorten the life of your engine. bigmachineparts is proud to be your direct online source for Baldwin Oil Filters & Elements. ---Full Flow Spin On Lube Filter ---Heavy-Duty housing provides unmatched strength ---Deformation resistant steel coil spring maintains positive load pressure on the elements ---Heavy-Duty Baseplate prevents high pressure and vibrations from causing leaks ---Contains synthetic cellulose media designed to increase efficiency, durability and contaminant-holding capacity Application Summary: Kenworth, Volvo, Peterbilt, Mack, International, Freightliner, Cummins ISB & ISB 5.9L, Paccar PX6 & PX7, Winnebago Chieftain & Journey Cross Reference: Cummins 3937144, Fram PH8942, Napa 7182.